Laminated glass

Abstract

This laminated glass comprises a first glass plate, a second glass plate, an interlayer film interposed between the first glass plate and the second glass plate and bonding the first glass plate to the second glass plate, and a display device embedded in the interlayer film. The display device has recesses and protrusions on a first main surface side thereof. The interlayer film includes: a first interlayer film which covers the first main surface of the display device; and a second interlayer film lying on the peripheral side of the first interlayer film in a plan view. The second interlayer film has an 85°C storage modulus which is greater than at least 1.3 times the 85°C storage modulus of the first interlayer film.

Description

Laminated glass

[0001] The present invention relates to laminated glass.

[0002] A technology for encapsulating a display device in an interlayer film of laminated glass is known, which uses a material selected from the group consisting of polybutylene terephthalate (PBT), polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl fluoride (PVF), polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), and the like (see, for example, Patent Document 1).

[0003] WO2018 / 215199

[0004] However, if a display device has an uneven surface, using a resin with low fluidity for the interlayer film may prevent the resin from penetrating into the unevenness, which may result in foaming. On the other hand, using a resin with high fluidity for the interlayer film may prevent foaming, but because highly fluid resins generally have low rigidity, there are concerns that the film may shrink when the laminated glass is used vertically or that its penetration resistance may deteriorate if an object hits the laminated glass.

[0005] The present invention has been made in view of the above points, and has an object to suppress the occurrence of bubbling and film shrinkage in laminated glass having a display device, and to suppress the deterioration of penetration resistance.

[0006] A laminated glass according to one embodiment of the disclosure includes a first glass plate, a second glass plate, an interlayer film positioned between the first glass plate and the second glass plate and bonding the first glass plate to the second glass plate, and a display device encapsulated in the interlayer film, wherein the display device has irregularities on a first main surface side, and the interlayer film includes a first interlayer film covering the first main surface of the display device and a second interlayer film positioned on the outer periphery of the first interlayer film in a plan view, and the storage modulus of the second interlayer film at 85°C is greater than 1.3 times the storage modulus of the first interlayer film at 85°C.

[0007] According to one embodiment of the disclosure, in a laminated glass having a display device, the occurrence of bubbling and film shrinkage can be suppressed, and deterioration of penetration resistance can also be suppressed.

[0008] Fig. 1 is a diagram illustrating a laminated glass according to the first embodiment. Fig. 2 is a diagram illustrating a laminated glass according to a first modified example of the first embodiment. Fig. 3 is a cross-sectional view illustrating a laminated glass according to a second modified example of the first embodiment. Fig. 4 is a diagram illustrating a part of the configuration of Examples 1 to 8 and evaluation results.

[0009] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. In each drawing, the same components are designated by the same reference numerals, and duplicate explanations may be omitted. In each drawing, the size and shape may be partially exaggerated to make the contents of the present invention easier to understand.

[0010] The term "vehicle" refers to any moving body capable of mounting laminated glass, including, but not limited to, automobiles, trains, ships, and aircraft.

[0011] Furthermore, a planar view refers to viewing an object from the direction of a normal line passing through the center of gravity of the main surface of the object, and the shape seen in this case is referred to as a planar shape.

[0012] Furthermore, the terms "top" and "bottom" refer to the top and bottom of the laminated glass when it is installed in a vehicle.

[0013] Furthermore, the outermost edge of a given member is referred to as the "periphery," and an area of ​​the given member having a width that is inscribed in the "periphery" is referred to as the "periphery portion."

[0014] 1A and 1B are diagrams illustrating a laminated glass according to a first embodiment, and Fig. 1A is a schematic diagram illustrating a laminated glass attached to a vehicle, as viewed from inside the vehicle cabin to the outside. Fig. 1B is a cross-sectional view taken along line A-A in Fig. 1A.

[0015] As shown in FIG. 1 , the laminated glass 10 is a laminated glass for a vehicle that includes a first glass sheet 11, a second glass sheet 12, an interlayer film 13, and a display device 14. In FIG. 1 , the planar shape of the laminated glass 10 is rectangular, but the planar shape of the laminated glass 10 is not limited to rectangular and may be any shape including a trapezoidal shape. The laminated glass 10 can be used, for example, as door glass or roof glass of a vehicle. The laminated glass 10 may also be used as a windshield or the like of a vehicle.

[0016] The first glass sheet 11 and the second glass sheet 12 are bonded together via an interlayer film 13. The first glass sheet 11 is disposed on a first side that faces the interior side of the vehicle when the laminated glass 10 is installed in the vehicle, and the second glass sheet 12 is disposed on a second side that faces the exterior side of the vehicle when the laminated glass 10 is installed in the vehicle.

[0017] The laminated glass 10 may have a complex curved shape, for example, curved in both the vertical and horizontal directions when installed in a vehicle. However, the complex curved shape is not limited to a shape curved in both the vertical and horizontal directions when installed in a vehicle, but includes a shape curved in any two or more different directions. Alternatively, the laminated glass 10 may have a single curved shape curved only in the vertical or horizontal direction when installed in a vehicle. However, the single curved shape is not limited to a shape curved only in the vertical or horizontal direction when installed in a vehicle, but includes a shape curved in any one direction only.

[0018] The laminated glass 10 is preferably curved so as to be convex toward the exterior of the vehicle. That is, the second glass sheet 12 is preferably curved so as to be convex toward the side opposite the interlayer film 13, and the first glass sheet 11 is preferably curved so as to be convex toward the interlayer film 13 side.

[0019] The first glass sheet 11 is an interior glass sheet that faces the interior side (first side) of the vehicle when the laminated glass 10 is installed in the vehicle. The first glass sheet 11 may be curved. The first glass sheet 11 has an upper edge, a lower edge, and two side edges connecting the upper edge and the lower edge.

[0020] The second glass sheet 12 is an exterior glass sheet that faces the vehicle exterior (second side) when the laminated glass 10 is installed in a vehicle. The second glass sheet 12 may be curved. Like the first glass sheet 11, the second glass sheet 12 has an upper edge, a lower edge, and two side edges connecting the upper edge and the lower edge in a plan view.

[0021] When the laminated glass 10 has a curved shape, the minimum value of the radius of curvature is preferably 500 mm or more and 100,000 mm or less. The radii of curvature of the first glass sheet 11 and the second glass sheet 12 may be the same or different. When the radii of curvature of the first glass sheet 11 and the second glass sheet 12 are different, it is preferable that the radius of curvature of the first glass sheet 11 is larger than the radius of curvature of the second glass sheet 12.

[0022] The first glass plate 11 and the second glass plate 12 are a pair of glass plates facing each other, and the interlayer film 13 is located between the pair of glass plates. The first glass plate 11 and the second glass plate 12 are fixed together with the interlayer film 13 sandwiched therebetween. The interlayer film 13 is a film located between the first glass plate 11 and the second glass plate 12 and bonds the first glass plate 11 and the second glass plate 12 together.

[0023] The outer peripheral side surface of the interlayer film 13 is preferably edge-treated. That is, the outer peripheral side surface of the interlayer film 13 is preferably treated so as not to protrude significantly from the outer peripheral side surfaces of the first glass sheet 11 and the second glass sheet 12. If the outer peripheral side surface of the interlayer film 13 protrudes from the outer peripheral side surfaces of the first glass sheet 11 and the second glass sheet 12 by an amount of 150 μm or less, this is preferable in terms of not impairing the appearance.

[0024] The display device 14 is a panel-shaped device that displays information such as images and text, and is encapsulated in the interlayer film 13. The information referred to here is not particularly limited, but may include, for example, guidance about the scenery outside the vehicle, road traffic information, route guidance, and advertisements. The type of the display device 14 is not particularly limited, but may include, for example, an LED (light-emitting diode) display, a liquid crystal display, an organic EL (organic electro-luminescence) display, and an inorganic EL (inorganic electro-luminescence) display.

[0025] The display device 14 includes, for example, a substrate 141 and a display element 142 arranged on the component arrangement surface of the substrate 141. The substrate 141 is made of, for example, glass or plastic. The planar shape of the substrate 141 is, for example, rectangular. The thickness of the substrate 141 is, for example, 0.05 mm or more and 3 mm or less, and preferably 2 mm or less. The display element 142 is, for example, an LED element, a liquid crystal display element, an organic EL display element, an inorganic EL display element, etc.

[0026] The display device 14 has a first main surface 14a and a second main surface 14b opposite to the first main surface 14a. The component placement surface of the substrate 141 becomes the first main surface 14a of the display device 14. The back surface of the substrate 141 opposite to the component placement surface becomes the second main surface 14b of the display device 14. The display device 14 has irregularities on the first main surface 14a side due to the external shape of the display element 142.

[0027] The display device 14 may include components other than the substrate 141 and the display element 142 as needed. Examples of components other than the substrate 141 and the display element 142 include a protective layer that covers the display element 142 along its outer shape. Each component of the display device 14 may be made of a transparent material to allow the outside to be visible. When the laminated glass 10 according to this embodiment is installed in a vehicle, the display device 14 may display information such as images and text either on the inside or outside of the vehicle.

[0028] The interlayer film 13 includes a first interlayer film 131 that covers the first main surface 14a of the display device 14, a second interlayer film 132 that is located on the outer periphery of the first interlayer film 131 in a plan view, and a third interlayer film 133 that covers the second main surface 14b of the display device 14. The first interlayer film 131 and the second interlayer film 132 are in contact with the surface of the first glass plate 11 facing the second glass plate 12.

[0029] The first interlayer film 131 covers the component mounting surface of the substrate 141 and the top and side surfaces of the display element 142. The second interlayer film 132 is arranged in a frame shape on the outer periphery of the first interlayer film 131 in a plan view. The inner surface of the second interlayer film 132 contacts the side surface of the first interlayer film 131. The first interlayer film 131 and the second interlayer film have, for example, the same thickness.

[0030] 1, the entire first intermediate film 131 overlaps the entire display device 14 in a plan view. That is, in the example of Fig. 1, the first intermediate film 131 and the adjacent side surfaces of the display device 14 on the upper and lower sides are located on the same plane. In a plan view, the distance from the boundary between the first intermediate film 131 and the second intermediate film 132 to the edge of the display device 14 is 0 mm.

[0031] The third interlayer film 133 extends toward the outer periphery of the display device 14 and the first interlayer film 131 in a plan view. The third interlayer film 133 is laminated on the second glass plate 12 side of the second interlayer film 132, and covers the second main surface 14b and side surfaces of the display device 14. The third interlayer film 133 contacts the surface of the second glass plate 12 facing the first glass plate 11.

[0032] The storage modulus of the second interlayer film 132 at 85°C is more than 1.3 times the storage modulus of the first interlayer film 131 at 85°C. The storage modulus of the second interlayer film 132 at 85°C is preferably more than 2.0 times, and more preferably more than 3.0 times, the storage modulus of the first interlayer film 131 at 85°C.

[0033] The first interlayer film 131 may be made of, for example, an ethylene-vinyl acetate copolymer (EVA) resin. The first interlayer film 131 may also be made of a non-crosslinked ethylene-vinyl acetate copolymer resin (non-crosslinked EVA). The second interlayer film 132 may be made of, for example, polyvinyl butyral (PVB). The second interlayer film 132 may also be made of a crosslinked ethylene-vinyl acetate copolymer resin (crosslinked EVA).

[0034] Non-crosslinked EVA refers to EVA containing a crosslinking agent that is used without being crosslinked. Crosslinked EVA refers to EVA containing a crosslinking agent that is used in a crosslinked state. In crosslinked EVA, the crosslinking agent crosslinks between polymers when heated, resulting in a stronger resin than non-crosslinked EVA. Therefore, the storage modulus of crosslinked EVA at 85°C is greater than that of non-crosslinked EVA at 85°C.

[0035] The storage modulus of the first interlayer film 131 at 85°C is preferably 0.40 MPa or less, and more preferably 0.3 MPa or less. The storage modulus of the second interlayer film 132 at 85°C is preferably 0.45 MPa or more, and more preferably 0.6 MPa or more. The storage modulus at 85°C can be measured using a RHEOVIBRON (DDV-01GP, manufactured by AND Co.) under measurement conditions of a static tension of 5.0 gf and a frequency of 1 Hz. A small storage modulus means that the interlayer film has high fluidity when heated and softened during the manufacturing process of laminated glass, and is easily deformed by heat when used as laminated glass.

[0036] As described below, in the manufacturing process of the laminated glass 10, the interlayer film 13 and the display device 14 are placed between the first glass plate 11 and the second glass plate 12 and are pressed together under heat. As described above, by covering the uneven first main surface 14a of the display device 14 with the first interlayer film 131, which has a relatively small storage modulus at 85°C, the first interlayer film 131 has high fluidity when it is heated and softened in the manufacturing process of the laminated glass 10. This makes it easier for the softened first interlayer film 131 to fill between adjacent display elements 142 of the display device 14, thereby suppressing the generation of bubbles in the interlayer film 13.

[0037] The height a [mm] of the display element 142 in the direction perpendicular to the component mounting surface of the substrate 141 and the storage modulus b [MPa] of the first interlayer film 131 at 85°C preferably satisfy a*b<0.3, more preferably a*b<0.2, and even more preferably a*b<0.15. This makes it easier for the softened first interlayer film 131 to fill in between adjacent display elements 142 of the display device 14, even if the height a of the display element 142 is increased, thereby further suppressing the generation of bubbles in the interlayer film 13. Note that this relationship was derived through research by the inventors.

[0038] Furthermore, when the glass plates are curved, during the manufacturing process of the laminated glass 10, when the display device 14 is sealed in the interlayer film 13 between the curved first glass plate 11 and the curved second glass plate 12, the first main surface 14a side of the display device 14 is covered with the first interlayer film 131, which has a relatively small storage modulus at 85°C. This allows the stress applied to the display device 14 to be alleviated.

[0039] Furthermore, by including the first interlayer film 131 in the interlayer film 13, which has a relatively small storage modulus at 85°C, the sound insulation of the laminated glass 10 can be improved.

[0040] Furthermore, by arranging the second interlayer film 132, which has a higher storage modulus than the first interlayer film 131, around the first interlayer film 131 in the interlayer film 13, the second interlayer film 132 is less likely to flow when the laminated glass 10 is installed vertically in a vehicle, even if the laminated glass becomes hot due to the environment outside or inside the vehicle, thereby suppressing the occurrence of film shrinkage in the interlayer film 13. Note that, from the viewpoint of suppressing the occurrence of film shrinkage, it is preferable that the storage modulus of the third interlayer film 133 at 85°C is approximately the same as the storage modulus of the second interlayer film 132 at 85°C.

[0041] Furthermore, by disposing the second interlayer film 132, which has a higher storage modulus than the first interlayer film 131, around the first interlayer film 131 in the interlayer film 13, the rigidity of the laminated glass 10 can be improved. For example, this can improve penetration resistance in a test specified in JIS R 3212:2015 (5.4), (5.5) Penetration Resistance Test. From the perspective of improving penetration resistance, it is preferable that the storage modulus of the third interlayer film 133 at 85°C be approximately the same as the storage modulus of the second interlayer film 132 at 85°C.

[0042] A shielding layer may be provided on part or all of the lower edge of the laminated glass 10 in plan view. Alternatively, the shielding layer may be provided in a band-like pattern on the side and upper edge edges as well as the lower edge edge of the laminated glass 10 in plan view, or may have a dotted pattern. The shielding layer may be, for example, an opaque colored ceramic layer. The color may be any, but dark colors such as black, brown, gray, and dark blue are preferred, with black being more preferred. The shielding layer may be formed, for example, by applying a ceramic color paste containing a fusible glass frit containing a black pigment to a glass plate by screen printing or the like and firing the paste. The shielding layer may also be formed, for example, by applying an organic ink containing a black or dark pigment to a glass plate by screen printing or the like and drying the ink. The presence of an opaque shielding layer in the laminated glass 10 can suppress ultraviolet degradation of the adhesive, made of a resin such as urethane, that holds the edge of the laminated glass 10 to the vehicle body. Furthermore, the adhesive is not visible from inside or outside the vehicle, improving the appearance.

[0043] Here, the first glass plate 11, the second glass plate 12, and the interlayer film 13 will be described in detail.

[0044] [Glass Plates] The first glass plate 11 and the second glass plate 12 may be inorganic or organic glass. Examples of inorganic glass include soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass, without any particular limitations. The second glass plate 12 located on the outer side of the laminated glass 10 is preferably inorganic glass from the viewpoint of scratch resistance, and soda-lime glass is preferred because it does not require extremely high temperatures from the viewpoint of formability. When the first glass plate 11 and the second glass plate 12 are soda-lime glass, clear glass, green glass containing a predetermined amount or more of iron, and dark green glass are suitable. Glass that absorbs ultraviolet or infrared light may also be used. Transparent glass is preferred, but tinted glass or privacy glass may also be used to the extent that transparency is not impaired. Furthermore, using borosilicate glass for the second glass plate 12 can improve the strength of the laminated glass 10 against flying stones. Furthermore, when the first glass plate 11 is positioned on the interior side of the vehicle and information is displayed on the interior side, it is preferable in terms of visibility of the information and the design of the exterior appearance from the exterior side of the vehicle if the visible light transmittance of the first glass plate 11 is higher than the visible light transmittance of the second glass plate 12. Furthermore, when the first glass plate 11 is positioned on the exterior side of the vehicle and information is displayed on the exterior side of the vehicle, it is preferable in terms of visibility of the information and the design of the exterior appearance from the interior side of the vehicle if the visible light transmittance of the first glass plate 11 is higher than the visible light transmittance of the second glass plate 12.

[0045] The inorganic glass may be either untempered glass or tempered glass. Untempered glass is produced by forming molten glass into a flat plate and slowly cooling it. Tempered glass is produced by forming a compressive stress layer on the surface of untempered glass. In the case of tempered glass, residual stress can be reduced by distributing stress isotropically.

[0046] The tempered glass may be either physically tempered glass, such as air-cooled tempered glass, or chemically tempered glass. In the case of physically tempered glass, the glass surface can be tempered by generating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the interior of the glass through an operation other than slow cooling, such as rapidly cooling a glass sheet uniformly heated during bending from a temperature near its softening point. Alternatively, semi-tempered glass, in which the compressive stress is appropriately controlled, may be used.

[0047] In the case of chemically strengthened glass, for example, after bending, the glass surface can be strengthened by generating compressive stress on the glass surface by an ion exchange method or the like.

[0048] On the other hand, examples of materials for organic glass include transparent resins such as polycarbonate, acrylic resins such as polymethyl methacrylate, polyvinyl chloride, and polystyrene.

[0049] The first glass sheet 11 and the second glass sheet 12 are not limited to a trapezoidal or rectangular shape, and may be processed into various shapes and curvatures. The first glass sheet 11 and the second glass sheet 12 may be bent using a gravity forming method, a press forming method, a roller forming method, or the like. The forming method for the first glass sheet 11 and the second glass sheet 12 is also not particularly limited. For example, in the case of inorganic glass, glass sheets formed by a float method or the like are preferred.

[0050] The thickness of the second glass sheet 12 at its thinnest portion is preferably 1.1 mm or more and 3 mm or less. A thickness of 1.1 mm or more provides sufficient strength, such as resistance to flying stones, while a thickness of 3 mm or less prevents the mass of the laminated glass 10 from becoming too large, which is preferable in terms of vehicle fuel efficiency. The thickness of the second glass sheet 12 at its thinnest portion is more preferably 1.8 mm or more and 2.8 mm or less, even more preferably 1.8 mm or more and 2.6 mm or less, even more preferably 1.8 mm or more and 2.2 mm or less, and even more preferably 1.8 mm or more and 2.1 mm or less.

[0051] The thickness of the first glass plate 11 is preferably 0.3 mm or more and 2.3 mm or less. When the thickness of the first glass plate 11 is 0.3 mm or more, the handling property is good, and when the thickness is 2.3 mm or less, the weight does not become too large.

[0052] Furthermore, if the thickness of the first glass plate 11 is not appropriate, when two sheets of glass with particularly deep curves are formed as the first glass plate 11 and the second glass plate 12, a mismatch will occur in the shapes of the two sheets, which will have a significant impact on the glass quality, such as residual stress after crimping.

[0053] However, by setting the thickness of the first glass sheet 11 to 0.3 mm or more and 2.3 mm or less, glass quality such as residual stress can be maintained. Setting the thickness of the first glass sheet 11 to 0.3 mm or more and 2.3 mm or less is particularly effective in maintaining glass quality in glass with a deep curvature. The thickness of the first glass sheet 11 is more preferably 0.5 mm or more and 2.2 mm or less, and even more preferably 0.7 mm or more and 2.1 mm or less. Within this range, the above-mentioned effects become more pronounced. The thickness of the first glass sheet 11 is more preferably 1.0 mm or more, even more preferably 1.3 mm or more, and even more preferably 1.5 mm or more. Furthermore, the thickness of the first glass sheet 11 is more preferably 2.0 mm or less, and even more preferably 1.9 mm or less.

[0054] The first glass sheet 11 and / or the second glass sheet 12 may not have a constant thickness, but may have a thickness that varies from location to location as necessary. For example, if the laminated glass 10 is a windshield, one or both of the first glass sheet 11 and the second glass sheet 12 may have a wedge-shaped cross section whose thickness increases from the bottom edge to the top edge of the windshield when the windshield is installed in a vehicle. In this case, if the thickness of the interlayer film 13 is constant, the total wedge angle of the first glass sheet 11 and the second glass sheet 12 varies, for example, within a range of more than 0 mrad to 1.0 mrad.

[0055] A coating having water repellency and ultraviolet and infrared blocking properties, or a coating having low reflectivity and low radiation properties may be provided on the outer surface of the first glass plate 11 and / or the second glass plate 12. Furthermore, a coating having ultraviolet and infrared blocking properties, low radiation properties, visible light absorption properties, coloring, etc. may be provided on the side of the first glass plate 11 and / or the second glass plate 12 that contacts the interlayer film 13.

[0056] When the first glass sheet 11 and the second glass sheet 12 are curved inorganic glass, the first glass sheet 11 and the second glass sheet 12 are bent after being formed by a float method or the like and before being bonded with the interlayer film 13. The bending is performed by softening the glass by heating. The heating temperature of the glass during bending is preferably controlled within a range of approximately 550°C to 700°C.

[0057] [Interlayer Film] Thermoplastic resins are often used for the interlayer film 13, including thermoplastic resins conventionally used for this type of application, such as plasticized polyvinyl acetal resins, plasticized polyvinyl chloride resins, saturated polyester resins, plasticized saturated polyester resins, polyurethane resins, plasticized polyurethane resins, ethylene-vinyl acetate copolymer resins, ethylene-ethyl acrylate copolymer resins, cycloolefin polymer resins, and ionomer resins. Resin compositions containing modified hydrogenated block copolymers, as described in Japanese Patent No. 6065221, are also suitable. Materials for the first interlayer film 131, the second interlayer film 132, and the third interlayer film 133 are selected from among these resins, taking into consideration the storage modulus at 85°C.

[0058] Among these, plasticized polyvinyl acetal resins are preferably used because they have an excellent balance of properties such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These thermoplastic resins may be used alone or in combination of two or more. The term "plasticized" in the plasticized polyvinyl acetal resin means that the resin has been plasticized by adding a plasticizer. The same applies to other plasticized resins.

[0059] However, when a specific substance is encapsulated in the interlayer film 13, the substance may be deteriorated by a specific plasticizer depending on the type of substance to be encapsulated, and in such a case, it is preferable to use a resin that does not substantially contain that plasticizer. Examples of resins that do not contain plasticizers include ethylene-vinyl acetate copolymer (EVA) resins.

[0060] Examples of the polyvinyl acetal resin include polyvinyl formal resin obtained by reacting polyvinyl alcohol (PVA) with formaldehyde, polyvinyl acetal resin in the narrow sense obtained by reacting PVA with acetaldehyde, and polyvinyl butyral (PVB) resin obtained by reacting PVA with n-butylaldehyde. PVB is particularly preferred because it has an excellent balance of properties such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorbency, moisture resistance, heat insulation, and sound insulation. These polyvinyl acetal resins may be used alone or in combination of two or more.

[0061] However, the material forming the interlayer 13 is not limited to a thermoplastic resin. The interlayer 13 may also contain functional particles such as an infrared absorber, an ultraviolet absorber, or a light-emitting agent. The interlayer 13 may also have a colored portion called a shade band. The color pigment used to form the colored portion is one that can be used for plastics, and the amount added may be adjusted so that the colored portion has a visible light transmittance of 40% or less. Examples of the color pigment include organic color pigments such as azo-based, phthalocyanine-based, quinacridone-based, perylene-based, perinone-based, dioxazine-based, anthraquinone-based, and isoindolino-based pigments, and inorganic color pigments such as oxides, hydroxides, sulfides, chromates, sulfates, carbonates, silicates, phosphates, arsenates, ferrocyanides, carbon, and metal powders. These color pigments may be used alone or in combination of two or more.

[0062] The thickness of the interlayer film 13 is preferably 0.5 mm or more at its thinnest part. The thickness of the interlayer film 13 is the total thickness of the individual layers. If the thickness of the interlayer film 13 at its thinnest part is 0.5 mm or more, the impact resistance required for laminated glass is sufficient. Furthermore, the thickness of the interlayer film 13 is preferably 4 mm or less at its thickest part. If the maximum thickness of the interlayer film 13 is 4 mm or less, the mass of the laminated glass will not become too large. The maximum thickness of the interlayer film 13 is more preferably 3 mm or less, and even more preferably 2 mm or less.

[0063] The interlayer film 13 does not have to have a constant thickness, and the thickness may vary from location to location as necessary. For example, if the laminated glass 10 is a windshield, the interlayer film 13 may have a wedge-shaped cross section whose thickness increases from the bottom edge to the top edge of the windshield when the windshield is installed in a vehicle. In this case, if the thicknesses of the first glass sheet 11 and the second glass sheet 12 are constant, the wedge angle of the interlayer film 13 varies, for example, within a range of more than 0 mrad to 1.0 mrad.

[0064] To produce the interlayer film 13, for example, an appropriate resin material for the interlayer film is selected from the above-mentioned materials and extruded in a heated, molten state using an extruder. The extrusion conditions, such as the extrusion speed, of the extruder are set to be uniform. The extruded resin film is then stretched in any direction as necessary to impart curvature to the upper and lower edges in accordance with the design of the laminated glass, thereby completing the interlayer film 13.

[0065] [Laminated Glass] The total thickness of the laminated glass 10 is preferably 2.8 mm or more and 10 mm or less. If the total thickness of the laminated glass 10 is 2.8 mm or more, sufficient rigidity can be ensured. Furthermore, if the total thickness of the laminated glass 10 is 10 mm or less, sufficient transmittance can be obtained and haze can be reduced. The total thickness of the laminated glass 10 is preferably 7 mm or less, more preferably 6 mm or less, and even more preferably 5 mm or less.

[0066] The misalignment between the first glass sheet 11 and the second glass sheet 12 is preferably 1.5 mm or less, and more preferably 1 mm or less, along at least one side of the laminated glass 10. Here, the misalignment between the first glass sheet 11 and the second glass sheet 12 refers to the amount of misalignment between the outer peripheral side surface of the first glass sheet 11 and the outer peripheral side surface of the second glass sheet 12 in a plan view.

[0067] It is preferable that the misalignment between the first glass sheet 11 and the second glass sheet 12 be 1.5 mm or less along at least one side of the laminated glass 10, since it does not impair the appearance. It is even more preferable that the misalignment between the first glass sheet 11 and the second glass sheet 12 be 1.0 mm or less along at least one side of the laminated glass 10, since it does not impair the appearance.

[0068] [Method for manufacturing laminated glass] To manufacture the laminated glass 10, first, a first glass plate 11, a second glass plate 12, an interlayer film 13 (a first interlayer film 131, a second interlayer film 132, and a third interlayer film 133), and a display device 14 are prepared. Next, the first interlayer film 131, the second interlayer film 132, the third interlayer film 133, and the display device 14 are sandwiched between the first glass plate 11 and the second glass plate 12 to prepare a laminate. The laminate is then placed in a rubber bag and evacuated. After preheating, the laminate is heated and pressurized at a predetermined pressure for a predetermined holding time using an autoclave set to a predetermined temperature. Through the above steps, the laminated glass 10 is completed.

[0069] In addition to the interlayer film 13, a film or device having functions such as heating, infrared reflection, light emission, power generation, light control, touch panel, visible light reflection, scattering, decoration, and absorption may be provided between the first glass sheet 11 and the second glass sheet 12, as long as the effects of the present invention are not impaired. Furthermore, the surface of the laminated glass 10 may have a film having functions such as anti-fogging, water repellency, heat shielding, and low reflection. Furthermore, the surface of the first glass sheet 11 or the surface of the second glass sheet 12 may have a film having functions such as heat shielding and heat generation.

[0070] <Modifications> Figure 2 illustrates a laminated glass according to Modification 1 of the first embodiment, and Figure 2(a) schematically illustrates the laminated glass attached to a vehicle as viewed from inside the vehicle cabin to the outside. Figure 2(b) is a cross-sectional view taken along line B-B in Figure 2(a). For convenience, the first glass plate 11 is not shown in Figure 2(a).

[0071] As shown in FIG. 2, the laminated glass 10A differs from the laminated glass 10 in that the interlayer film 13 is replaced with an interlayer film 13A.

[0072] In the interlayer film 13A, the first interlayer film 131 extends toward the outer periphery of the display device 14 in a plan view. The first interlayer film 131 can extend, for example, in a frame shape toward the outer periphery of the display device 14 in a plan view. A portion of the first interlayer film 131 contacts the third interlayer film 133.

[0073] If the boundary between the first interlayer film 131 and the second interlayer film 132 coincides with the edge of the display device 14 in a plan view, bubbles may form in the interlayer film 13 near the edge of the display device 14. By having the first interlayer film 131 extend more toward the outer periphery of the display device 14 in a plan view as in the laminated glass 10A, the formation of bubbles near the edge of the display device 14 can be suppressed.

[0074] In a plan view, the distance L from the boundary between the first interlayer film 131 and the second interlayer film 132 to the edge of the display device 14 is preferably 5 mm or more, and more preferably 10 mm or more. With such a value, foaming of the interlayer film 13 can be suitably suppressed.

[0075] In addition, from the viewpoint of suppressing the occurrence of film shrinkage and improving penetration resistance, it is preferable that the storage modulus of the third intermediate film 133 at 85°C is approximately the same as the storage modulus of the second intermediate film 132 at 85°C.

[0076] Fig. 3 is a cross-sectional view illustrating a laminated glass according to Modification 2 of the first embodiment. As shown in Fig. 3, the laminated glass 10B differs from the laminated glass 10 in that the interlayer film 13 is replaced with an interlayer film 13B.

[0077] In the interlayer film 13B, the third interlayer film 133 covers the second main surface 14b and the side surfaces of the display device 14. In a plan view, the second interlayer film 132 is positioned in a frame shape on the outer periphery of the first interlayer film 131 and the third interlayer film 133. The inner surface of the second interlayer film 132 contacts the side surfaces of the first interlayer film 131 and the third interlayer film 133. The second interlayer film 132 also contacts the surface of the first glass plate 11 facing the second glass plate 12, and the surface of the second glass plate 12 facing the first glass plate 11.

[0078] In the example of Fig. 3, the entire first intermediate film 131 overlaps the entire third intermediate film 133 in a plan view. That is, in the example of Fig. 3, the vertically adjacent side surfaces of the first intermediate film 131 and the third intermediate film 133 are located on the same plane. Note that the example is not limited to Fig. 3, and the vertically adjacent side surfaces of the first intermediate film 131 and the third intermediate film 133 do not have to be located on the same plane.

[0079] In the intermediate film 13B, the storage modulus of the second intermediate film 132 at 85°C is more than 1.3 times the storage modulus of the first intermediate film 131 and the third intermediate film 133 at 85°C. The storage modulus of the second intermediate film 132 at 85°C is preferably more than 2.0 times the storage modulus of the first intermediate film 131 and the third intermediate film 133 at 85°C, and more preferably more than 3.0 times the storage modulus of the first intermediate film 131 and the third intermediate film 133 at 85°C.

[0080] In this way, the first intermediate film 131 and the third intermediate film 133, which have a low storage modulus, cover the first main surface 14a and the second main surface 14b of the display device 14, so that the laminated glass 10B can reduce the stress applied to the display device 14 more than the laminated glass 10 and the laminated glass 10A.

[0081] In plan view, the distance L from the boundary between the first interlayer film 131 and the second interlayer film 132 to the edge of the display device 14 is preferably 5 mm or more, and more preferably 10 mm or more. Such a value can suitably suppress foaming of the interlayer film 13. Furthermore, in plan view, the distance L is preferably 100 mm or less, more preferably 50 mm or less, even more preferably 30 mm or less, and even more preferably 15 mm or less. Such a value allows the width of the highly rigid second interlayer film 132 to be widened, thereby improving penetration resistance in the test specified in JIS R 3212:2015 (5.4), (5.5) Penetration Resistance Test.

[0082] Furthermore, the second interlayer film 132 has a higher film strength than the first interlayer film 131 and the third interlayer film 133. Therefore, by increasing the width of the second interlayer film 132 and increasing the contact area with the first glass plate 11 and the second glass plate 12, it is possible to strengthen the penetration resistance between the interlayer film 13B and the first glass plate 11 and the second glass plate 12.

[0083] Examples and Comparative Examples Below, examples and comparative examples are described, but the present invention is not limited to these examples and comparative examples. In Examples 1 to 8, laminated glass having the planar shape shown in Figure 2(a) and the cross-sectional shape shown in Figure 3 was produced and evaluated. Examples 1 to 5 and 8 are examples, and Examples 6 and 7 are comparative examples.

[0084] [Example 1] First, green glass (commonly known as VFL, manufactured by AGC) was prepared as a flat first glass plate 11 and a flat second glass plate 12. The dimensions of both the first glass plate 11 and the second glass plate 12 were 500 mm × 500 mm × 2.0 mm thickness. Neither the first glass plate 11 nor the second glass plate 12 had a wedge shape in cross section, and both had a uniform thickness.

[0085] Furthermore, a 0.40 mm thick EVA film (Petrothene Ultrathene manufactured by Tosoh Corporation) was prepared as the first interlayer 131. A 0.76 mm thick PVB film (S-LEC Sound Acoustic Film manufactured by Sekisui Chemical Co., Ltd.) was prepared as the second interlayer 132. A 0.38 mm thick PVB film (S-LEC Sound Acoustic Film manufactured by Sekisui Chemical Co., Ltd.) was prepared as the third interlayer 133.

[0086] The storage moduli of the interlayer films were measured using a RHEOVIBRON (DDV-01GP, manufactured by AND Co.) under the following measurement conditions: temperature 85°C, static tension 5.0 gf, and frequency 1 Hz. The storage moduli of the first interlayer film 131 were 0.36 MPa, and the storage moduli of the second interlayer film 132 and the third interlayer film 133 were 1.32 MPa.

[0087] A display device 14 was also prepared, in which a plurality of LEDs were arranged lengthwise and widthwise on a glass substrate 141 as a display element 142. The size of the substrate 141 was 100 mm length x 100 mm width x 0.5 mm thickness. The height of the display element 142 was 0.3 mm.

[0088] Next, a laminate was fabricated by sandwiching the first interlayer film 131, the second interlayer film 132, the third interlayer film 133, and the display device 14 between the first glass plate 11 and the second glass plate 12 to form the structure shown in FIGS. 2( a) and 3 . The laminate was then placed in a rubber bag and evacuated under a vacuum of 640 mmHg for 7 minutes. After preheating at 100°C for 40 minutes, the laminate was heated and pressurized in an autoclave set to 135±10°C under conditions of a pressure of 1.30±0.07 MPa and a holding time of 30±5 minutes. This resulted in a laminated glass having the structure shown in FIGS. 2( a) and 3 . The distance L in the fabricated laminated glass was 15 mm.

[0089] [Example 2] A laminated glass was produced in the same manner as in Example 1, except that an EVA film (Petrothene Ultrathene, manufactured by Tosoh Corporation) with a thickness of 0.76 mm was prepared as the third interlayer film 133. In the produced laminated glass, the distance L was 15 mm.

[0090] Example 3 A laminated glass was produced in the same manner as in Example 1, except that a non-crosslinked EVA film (manufactured by Hi-UV Corporation) was prepared as the first interlayer film 131, and crosslinked EVA films (manufactured by Hi-UV Corporation) were prepared as the second interlayer film 132 and the third interlayer film 133. The film thicknesses of the first interlayer film 131, the second interlayer film 132, and the third interlayer film 133 were the same as in Example 1. The storage modulus of the first interlayer film 131 was 0.15 MPa. The storage modulus of the second interlayer film 132 and the third interlayer film 133 was 0.48 MPa. In the produced laminated glass, the distance L was 15 mm.

[0091] Example 4 A laminated glass was produced in the same manner as in Example 2. In the produced laminated glass, the distance L was 3 mm.

[0092] Example 5 A laminated glass was produced in the same manner as in Example 2. In the produced laminated glass, the distance L was 70 mm.

[0093] Example 6 A laminated glass was produced in the same manner as in Example 1, except that an EVA film (Petrothene Ultrathene, manufactured by Tosoh Corporation) was prepared as the first interlayer film 131, the second interlayer film 132, and the third interlayer film 133. The film thicknesses of the first interlayer film 131, the second interlayer film 132, and the third interlayer film 133 were the same as in Example 1.

[0094] Example 7 A laminated glass was produced in the same manner as in Example 1, except that PVB films (S-LEC Sound Acoustic Film manufactured by Sekisui Chemical Co., Ltd.) were prepared as the first interlayer film 131, the second interlayer film 132, and the third interlayer film 133. The film thicknesses of the first interlayer film 131, the second interlayer film 132, and the third interlayer film 133 were the same as in Example 1.

[0095] [Example 8] A PVB film (S-LEC Sound Acoustic Film manufactured by Sekisui Chemical Co., Ltd.) adjusted to a predetermined elastic modulus by immersing it in a plasticizer was used as the first interlayer film 131 (referred to as softened PVB in Figure 4). A laminated glass was fabricated in the same manner as in Example 1, except that PVB films (S-LEC Sound Acoustic Film manufactured by Sekisui Chemical Co., Ltd.) were prepared as the second interlayer film 132 and the third interlayer film 133. The film thicknesses of the first interlayer film 131, the second interlayer film 132, and the third interlayer film 133 were the same as in Example 1. The storage modulus of the first interlayer film 131 was 0.94 MPa. The distance L of the fabricated laminated glass was 15 mm.

[0096] [Evaluation] The laminated glasses of Examples 1 to 8 were evaluated for bubbling, penetration resistance, and film shrinkage.

[0097] In the evaluation of bubbles, the laminated glasses of Examples 1 to 8 were visually inspected for the presence or absence of bubbles when viewed from the first glass plate 11 side in a plan view. When absolutely no bubbles were observed in the interlayer film, the glass was rated as ⊚ (excellent), when the bubbles were 3% or less within the plane of the first glass plate 11, the glass was rated as ○ (good), and when the bubbles were more than 3% within the plane of the first glass plate 11, the glass was rated × (poor).

[0098] To evaluate penetration resistance, the laminated glasses of Examples 1 to 8 were placed horizontally with the first glass plate 11 facing upward. Then, a ball drop test was conducted in accordance with JIS R 3212:2015 (5.4), (5.5) Penetration Resistance Test, in which a steel ball with a mass of 2.26 kg was dropped from a height of 4 m above the first glass plate 11. A glass that did not penetrate the entire surface of the laminated glass was rated as excellent (◎), a glass that did not penetrate 90% or more of the surface of the laminated glass was rated as good (◯), and a glass that did not penetrate less than 90% of the surface of the laminated glass was rated as poor (×).

[0099] To evaluate film shrinkage, the laminated glasses of Examples 1 to 8 were stored in an upright position in an environment at 90°C for 100 hours, and then the misalignment (amount of depression) of the interlayer film at the top of the laminated glass was visually confirmed. An interlayer film misalignment of less than 1 mm was rated as ⊚ (excellent), an interlayer film misalignment of 1 mm or more but less than 3 mm was rated as ○ (good), and an interlayer film misalignment of 3 mm or more was rated × (poor). There was no misalignment of the interlayer film before storage in an environment at 90°C.

[0100] In addition, as an overall evaluation, when all of the foaming, penetration resistance, and film shrinkage were rated as ⊚ (excellent), when one or more were ∘ (good) but no × (poor), it was rated as ○ (good), and when at least one was ∘ (poor).

[0101] [Evaluation Results] Fig. 4 is a diagram showing part of the configuration and evaluation results of Examples 1 to 8. In Fig. 4, the ratio of the storage modulus is the storage modulus of the second interlayer film 132 relative to the storage modulus of the first interlayer film 131 measured in each example (i.e., storage modulus of the second interlayer film 132 / storage modulus of the first interlayer film 131).

[0102] 4 , in Examples 1 to 5, in which the ratio of the storage modulus of the second interlayer film 132 to the storage modulus of the first interlayer film 131 was 3.2 or higher, the bubbling, penetration resistance, and shrinkage properties were all rated as good (○) or higher, and the overall evaluation was also good (○) or higher. In particular, in Examples 1 to 3, in which the distance L was 15 mm, the bubbling, penetration resistance, and shrinkage properties were all rated as excellent (◎), and the overall evaluation was excellent (◎). Furthermore, in Example 8, in which the ratio of the storage modulus of the second interlayer film 132 to the storage modulus of the first interlayer film 131 was 1.4, the bubbling, penetration resistance, and shrinkage properties were all rated as good (○) or higher, and the overall evaluation was also good (○).

[0103] In contrast, in Examples 6 and 7, in which the ratio of the storage modulus of the second interlayer film 132 to the storage modulus of the first interlayer film 131 was 1, the overall evaluation was × (poor).

[0104] In Example 6, EVA with a low storage modulus was used as the first interlayer 131 covering the display device 14, and it is thought that foaming did not occur due to its high fluidity. On the other hand, EVA with a low storage modulus was used as the second interlayer 132 and the third interlayer 133, and it is thought that the rigidity of the areas that do not overlap with the display device 14 in plan view was low, resulting in poor penetration resistance. Furthermore, it is thought that EVA with a low storage modulus was used as the second interlayer 132 and the third interlayer 133, and it is thought that it flowed in an environment of 90°C, causing film shrinkage.

[0105] In Example 7, it is believed that a lot of foaming occurred due to low fluidity because PVB with a high storage modulus was used as the first interlayer 131 covering the display device 14. On the other hand, it is believed that PVB with a high storage modulus was used as the second interlayer 132 and the third interlayer 133, which increased the rigidity of the areas that do not overlap with the display device 14 in plan view, resulting in good penetration resistance. In addition, it is believed that the use of PVB with a high storage modulus as the second interlayer 132 and the third interlayer 133 suppressed fluidity even in an environment of 90°C, preventing film shrinkage.

[0106] From these results, it can be said that in order to achieve good conditions for bubbling, penetration resistance, and shrinkage, it is preferable to use a material with a low storage modulus for the first interlayer film 131 and a material with a high storage modulus for the second interlayer film 132. The results of Figure 4 show that sufficient results can be obtained if the storage modulus of the second interlayer film 132 at 85°C is more than 1.4 times the storage modulus of the first interlayer film 131 at 85°C. Further detailed studies by the inventors confirmed that if the storage modulus of the second interlayer film 132 at 85°C is more than 1.3 times the storage modulus of the first interlayer film 131 at 85°C, results of ◯ (good) or better can be obtained for bubbling, penetration resistance, and shrinkage, and if the storage modulus is more than 3.0 times, all of them are rated as ⊚ (excellent).

[0107] 4, the reason why Example 4 is rated as good (o) for foaming is thought to be because the distance L was 3 mm, which is shorter than Examples 1 to 3, and therefore fluidity was insufficient near the edge of the display device 14. The reason why Example 5 is rated as good (o) for penetration resistance is thought to be because the first interlayer film 131, which uses EVA with a low storage modulus, is present in a relatively wide range around the display device 14 in a plan view, and therefore the area with low rigidity as an interlayer film increased.

[0108] From these results, it can be said that in order to achieve good foaming, penetration resistance, and film shrinkage, it is preferable to set the distance L in an appropriate range along with the storage modulus ratio. From the results in Figure 4, it can be seen that better results can be obtained if the storage modulus ratio is 3.2 or more and the distance L is 15 mm. Further detailed studies by the inventors confirmed that the distance L is preferably 5 mm or more and 100 mm or less, more preferably 10 mm or more and 50 mm or less, and more preferably 10 mm or more and 30 mm or less.

[0109] Although the preferred embodiments have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0110] In addition to the above embodiments, the following supplementary notes are further disclosed. [Supplementary Note 1] Laminated glass including a first glass plate, a second glass plate, an interlayer film located between the first glass plate and the second glass plate and bonding the first glass plate to the second glass plate, and a display device encapsulated in the interlayer film, wherein the display device has irregularities on a first main surface side, and the interlayer film includes a first interlayer film covering the first main surface of the display device and a second interlayer film located on the outer periphery of the first interlayer film in a plan view, and wherein the storage modulus of the second interlayer film at 85°C is more than 1.3 times the storage modulus of the first interlayer film at 85°C. [Supplementary Note 2] Laminated glass according to Supplementary Note 1, wherein the storage modulus of the second interlayer film at 85°C is more than 2.0 times the storage modulus of the first interlayer film at 85°C. [Appendix 3] The laminated glass according to Appendix 1, wherein the storage modulus of the second interlayer film at 85°C is more than 3.0 times the storage modulus of the first interlayer film at 85°C. [Appendix 4] The laminated glass according to any one of Appendixes 1 to 3, wherein, in a plan view, the first interlayer film extends more toward the outer periphery than the display device. [Appendix 5] The laminated glass according to Appendix 4, wherein, in a plan view, the distance from the boundary between the first interlayer film and the second interlayer film to an edge of the display device is 5 mm or more. [Appendix 6] The laminated glass according to Appendix 5, wherein, in a plan view, the distance is 10 mm or more. [Appendix 7] The laminated glass according to any one of Appendices 1 to 6, wherein the interlayer film further includes a third interlayer film covering a second main surface opposite the first main surface of the display device, the second interlayer film being located on the outer periphery of the first interlayer film and the third interlayer film in a plan view, and the storage modulus of the second interlayer film at 85°C is more than 1.3 times the storage modulus of the third interlayer film at 85°C. [Appendix 8] The laminated glass according to Appendices 7, wherein the storage modulus of the second interlayer film at 85°C is more than 2.0 times the storage modulus of the third interlayer film at 85°C. [Appendix 9] The laminated glass according to Appendices 8, wherein the distance from the boundary between the first interlayer film and the second interlayer film to an edge of the display device in a plan view is 100 mm or less. [Appendix 10] The laminated glass according to Appendices 9, wherein the distance is 50 mm or less in a plan view.[Appendix 11] The laminated glass according to Appendix 10, wherein the distance is 30 mm or less in a plan view. [Appendix 12] The laminated glass according to any one of Appendices 1 to 11, wherein the first interlayer film has a storage modulus of 0.40 MPa or less at 85°C. [Appendix 13] The laminated glass according to Appendix 12, wherein the second interlayer film has a storage modulus of 0.45 MPa or more at 85°C. [Appendix 14] The laminated glass according to any one of Appendices 1 to 13, wherein the display device includes a substrate and a display element arranged on a component mounting surface of the substrate, the first interlayer film covers the component mounting surface and an upper surface and a side surface of the display element, and a height a [mm] of the display element in a direction perpendicular to the component mounting surface and a storage modulus b [MPa] of the first interlayer film at 85°C satisfy a*b<0.3.

[0111] This international application claims priority based on Japanese Patent Application No. 2024-020003, filed on February 14, 2024, the entire contents of which are incorporated herein by reference.

[0112] REFERENCE SIGNS LIST 10, 10A, 10B Laminated glass 11 First glass plate 12 Second glass plate 13, 13A, 13B Interlayer film 14 Display device 14a First main surface 14b Second main surface 131 First interlayer film 132 Second interlayer film 133 Third interlayer film 141 Substrate 142 Display element

Claims

1. A laminated glass comprising a first glass plate, a second glass plate, an interlayer film positioned between the first glass plate and the second glass plate and bonding the first glass plate to the second glass plate, and a display device encapsulated in the interlayer film, wherein the display device has irregularities on a first main surface side, and the interlayer film includes a first interlayer film covering the first main surface of the display device and a second interlayer film positioned on the outer periphery of the first interlayer film in a plan view, and wherein the storage modulus of the second interlayer film at 85°C is greater than 1.3 times the storage modulus of the first interlayer film at 85°C.

2. The laminated glass according to claim 1, wherein the storage modulus of the second interlayer film at 85°C is more than 2.0 times the storage modulus of the first interlayer film at 85°C.

3. The laminated glass according to claim 1, wherein the storage modulus of the second interlayer film at 85°C is greater than 3.0 times the storage modulus of the first interlayer film at 85°C.

4. The laminated glass according to any one of claims 1 to 3, wherein, in a plan view, the first interlayer film extends outward from the display device.

5. The laminated glass according to claim 4, wherein the distance from the boundary between the first interlayer film and the second interlayer film to the edge of the display device in a plan view is 5 mm or more.

6. The laminated glass according to claim 5, wherein the distance is 10 mm or more in plan view.

7. The laminated glass according to any one of claims 1 to 3, wherein the interlayer film further includes a third interlayer film covering a second principal surface opposite the first principal surface of the display device, the second interlayer film being located on the outer peripheral side of the first interlayer film and the third interlayer film in a plan view, and the storage modulus of the second interlayer film at 85°C is greater than 1.3 times the storage modulus of the third interlayer film at 85°C.

8. The laminated glass according to claim 7, wherein the storage modulus of the second interlayer film at 85°C is more than 2.0 times the storage modulus of the third interlayer film at 85°C.

9. The laminated glass according to claim 8, wherein the distance from the boundary between the first interlayer film and the second interlayer film to the edge of the display device in a plan view is 100 mm or less.

10. The laminated glass according to claim 9, wherein the distance is 50 mm or less in plan view.

11. The laminated glass according to claim 10, wherein the distance is 30 mm or less in plan view.

12. The laminated glass according to any one of claims 1 to 3, wherein the storage modulus of the first interlayer film at 85°C is 0.40 MPa or less.

13. The laminated glass according to claim 12, wherein the storage modulus of the second interlayer film at 85°C is 0.45 MPa or more.

14. The laminated glass according to any one of claims 1 to 3, wherein the display device includes a substrate and a display element arranged on a component-mounting surface of the substrate, the first interlayer film covers the component-mounting surface and the upper and side surfaces of the display element, and the height a [mm] of the display element in a direction perpendicular to the component-mounting surface and the storage modulus b [MPa] of the first interlayer film at 85°C satisfy a*b<0.3.

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